According to NOAA (https://tidesandcurrents.noaa.gov/sltrends/sltrends.html), sea level rise at Grand Isle LA averaged slightly over 9 mm/ year since 1947, and 9.65 mm/ year at Eugene Island LA. And 4.71 mm/ year at New Canal LA. (Those are the 3 locations on that graphic.) According to the wikipedia (attributed to an IPCC report), average global sea level rise in the 20th century is in the neighborhood of 1.8 mm/ year. Those are different time frames, but afaik the 20th century rise was more or less linear, so the IPCC numbers should hold for the NOAA time frame. That means that the global sea level rise for two of the three LA stations accounts for only about 20% of the rise; less than 40% for the third station.
So no, you cannot attribute most of the rising sea level in Louisiana to climate change. Instead, most of the problem there is subsidence. And as for whether "Literally everyone who studies this stuff for a living agrees with this", wrong. As stated in the IPCC report (http://old.grida.no//climate/ipcc_tar/wg1/422.htm#tab119): "Coastal subsidence in river delta regions can be an important contributing factor to sea level change, with a typical magnitude of 10 mm/yr, although the phenomenon will usually be of a local character. Regions of documented subsidence include the Mediterranean deltas (Stanley, 1997), the Mississippi delta (Day et al., 1993)..." The sea level rise in LA is real; the attribution of that rise to climate change is only 20% true.
As for the Solomon Islands, the rise there is also well above global average, something like 7mm/ year. That suggests that factors other than global sea level rise, brought on by climate change, are to blame, as the author of the study (Dr. Simon Albert) that reported on the loss of those islands himself stated.
And finally, as for Florida, last I looked we haven't lost it. (Well, the Democrats lost it last November, but you know what I mean.) The entire state is on top of a fresh water aquifer, and withdrawals from that aquifer have increased in recent decades. But I don't know whether the removal of fresh water would cause subsidence, or just replacement of fresh water by salt water.